A virtual keyboard is a software-based keyboard that appears on a screen, allowing users to input text without a physical keyboard. It can be used on various devices, including smartphones, tablets, and computers. Users can tap or click on the keys displayed on the screen to type, making it a convenient option for touch-enabled devices. Virtual keyboards often come with customizable features, such as different layouts and languages. They can also include predictive text and autocorrect functions to enhance typing speed and accuracy. Many operating systems, like Windows and Android, offer built-in virtual keyboards for easy access.